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Product Detailed Parameters
- Description：IC REG BUCK ADJ 2.5A 16MSOP
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR)
- Function：Step-Down
- Output Configuration：Positive
- Topology：Buck
- Output Type：Adjustable
- Number of Outputs：1
- Voltage - Input (Min)：4.3V
- Voltage - Input (Max)：42V
- Voltage - Output (Min/Fixed)：1.197V
- Voltage - Output (Max)：40.74V
- Current - Output：2.5A
- Frequency - Switching：200kHz ~ 2.25MHz
- Synchronous Rectifier：No
- Operating Temperature：-40°C ~ 125°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：16-TFSOP (0.118", 3.00mm Width) Exposed Pad
- Supplier Device Package：16-MSOP-EP
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Overview
The LT3975IMSE#TRPBF is a monolithic buck switching regulator from Analog Devices, designed for high-efficiency power conversion. It accepts input voltages up to 42V and delivers load currents up to 2.5A. The device features an adjustable switching frequency ranging from 200kHz to 2.2MHz and operates with a quiescent current of only 2.7µA in Burst Mode operation. It maintains output ripple below 15mV in typical applications and includes current limit foldback protection. The component functions within a temperature range of -40°C to +125°C TJ.
Feature Summary
- Burst Mode operation ensures high efficiency at low output currents while maintaining low output ripple
- Adjustable switching frequency allows optimization for specific design requirements
- Current limit foldback protects the device during short circuit conditions
- Low dropout voltage capability supports operation during automotive cold crank events
Applications
- Automotive systems requiring wide input voltage tolerance
- Industrial equipment utilizing step-down DC-DC conversion
- Battery-powered devices needing extended runtime through low quiescent current
Procurement Notes
Verify the exact part number suffix against official Analog Devices documentation to confirm package type and tape/reel specifications. Ensure compatibility with your PCB footprint for the MSOP-10EP package. Cross-reference RoHS compliance status if required by your manufacturing standards. Confirm availability through authorized distributors as supply levels may vary.
Selection Notes
Select this component when a wide input voltage range up to 42V is required alongside high efficiency at light loads. The adjustable frequency feature provides flexibility for EMI management. Consider the thermal performance of the exposed pad package for heat dissipation. Verify that the 2.5A output current meets the maximum load requirements of the target application circuit.
Part Context
This part belongs to the LT3975 family of synchronous buck regulators. It is distinct from other LT39xx series parts by its specific 42V input rating and 2.5A current capacity. The IMSE#TRPBF designation indicates the industrial temperature grade, MSOP-10EP package, and tape and reel packaging format used for automated assembly.
Replacement Considerations
Check for direct pin-compatible alternatives within the LT3975 family or similar Analog Devices buck regulators. Verify that substitute components match the 42V input limit and 2.5A current capability. Ensure replacement parts support the same Burst Mode operation and adjustable frequency range to maintain system performance.
